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Your search keyword '"McKenna, Timothy P."' showing total 19 results
Start Over Author "McKenna, Timothy P." Publisher optica publishing group
19 results on '"McKenna, Timothy P."'

1. Efficient parametric down-conversion by gain-trapped solitons

Author

Hamrouni, Marin, primary, Jankowski, Marc, additional, Hwang, Alexander Y., additional, Jornod, Nayara, additional, Mishra, Jatadhari, additional, Stokowski, Hubert S., additional, McKenna, Timothy P., additional, Langrock, Carsten, additional, Südmeyer, Thomas, additional, Safavi-Naeini, Amir, additional, and Fejer, Martin M., additional

Published
2024
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9. III/V-on-lithium niobate amplifiers and lasers

Author

Op de Beeck, Camiel, primary, Mayor, Felix M., additional, Cuyvers, Stijn, additional, Poelman, Stijn, additional, Herrmann, Jason F., additional, Atalar, Okan, additional, McKenna, Timothy P., additional, Haq, Bahawal, additional, Jiang, Wentao, additional, Witmer, Jeremy D., additional, Roelkens, Gunther, additional, Safavi-Naeini, Amir H., additional, Van Laer, Raphaël, additional, and Kuyken, Bart, additional

Published
2021
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18. Arbitrary electro-optic bandwidth and frequency control in lithium niobate optical resonators.

Author

Herrmann JF, Dean DJ, Sarabalis CJ, Ansari V, Multani K, Wollack EA, McKenna TP, Witmer JD, and Safavi-Naeini AH

Abstract

In situ tunable photonic filters and memories are important for emerging quantum and classical optics technologies. However, most photonic devices have fixed resonances and bandwidths determined at the time of fabrication. Here we present an in situ tunable optical resonator on thin-film lithium niobate. By leveraging the linear electro-optic effect, we demonstrate widely tunable control over resonator frequency and bandwidth on two different devices. We observe up to ∼50 × tuning in the bandwidth over ∼50 V with linear frequency control of ∼230 MHz/V. We also develop a closed-form model predicting the tuning behavior of the device. This paves the way for rapid phase and amplitude control over light transmitted through our device.

Published
2024
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19. Cryogenic packaging of an optomechanical crystal.

Author

McKenna TP, Patel RN, Witmer JD, Van Laer R, Valery JA, and Safavi-Naeini AH

Abstract

There is an increasing need to simplify optical coupling techniques for low-temperature integrated photonics experiments. Various promising and scalable photonic packaging techniques have been under development, but few methods compatible with low-temperature operation have been reported. Here, we demonstrate 25 % coupling efficiency from an optical fiber to a silicon optomechanical crystal at 7 mK in a dilution refrigerator without in-situ optical alignment at cryogenic temperatures. Our coupling scheme uses angle-polished fibers glued to the surface of the chip. The technique paves the way for scalable integration of optical technologies at low temperatures, circumventing the need for optical alignment in a highly constrained cryogenic environment. The technique is broadly applicable to studies of low-temperature optical physics and to emerging quantum photonic technologies.

Published
2019
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